thanks so much guys, a wealth of knowledge! ive had a good look at the engine again since ive been home from work (i was at work when i posted previously) and can see the 3 holes under the cup. I wont be able to do the rope trick as the top end of the engine is in pieces. Ive got an electric 12V rattle gun which i dont know how to describe the process, but it builds up speed and once it gets to a point the socket starts to spin, kind of like an impact driver. I'll rework the nut and try my luck. Whats Penetrene and where can i get it? ive never heard of it before.
